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EquipmentDataModel now carries an EptStateMachine as a value member alongside the other top-level state machines. Server installs a state-change handler that maps every EPT transition to a CEID emission through the existing emit_event path: 1100 NonScheduledTime 1103 Engineering 1101 ScheduledDowntime 1104 Standby 1102 UnscheduledDowntime 1105 Productive CEIDs land in the 1100+ block to keep clear of the demo equipment.yaml (100s/200s/400s) and E90 (900s). Log lines include the dwell time of the previous state so trace-level diagnostics show utilization without extra tooling. Application code drives transitions by calling model->ept.on_event(...); the existing event-report machinery (subscription state, S6F11 batching, spool) gates wire emission so EPT events spool on offline hosts like every other CEID. Closes Tranche F — E116 Equipment Performance Tracking end-to-end. Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>